14991164737 has 4 divisors (see below), whose sum is σ = 14994299860. Its totient is φ = 14988029616.

The previous prime is 14991164731. The next prime is 14991164761. The reversal of 14991164737 is 73746119941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6065450161 + 8925714576 = 77881^2 + 94476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14991164737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14991164731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560378 + ... + 1569955.

It is an arithmetic number, because the mean of its divisors is an integer number (3748574965).

Almost surely, 2^14991164737 is an apocalyptic number.

It is an amenable number.

14991164737 is a deficient number, since it is larger than the sum of its proper divisors (3135123).

14991164737 is an equidigital number, since it uses as much as digits as its factorization.

14991164737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135122.

The product of its digits is 1143072, while the sum is 52.

The spelling of 14991164737 in words is "fourteen billion, nine hundred ninety-one million, one hundred sixty-four thousand, seven hundred thirty-seven".